[SR-407] Support ELF in cmpcodesize

[modocache]

Previous ID	SR-407
Radar	None
Original Reporter	@modocache
Type	Improvement

Additional Detail from JIRA

Votes	0
Component/s
Labels	Improvement, StarterBug
Assignee	None
Priority	Medium

md5: 47c497e6ac62c1fc388cf821f38e6cd3

Issue Description:

In #638 Nadav Rotem mentions supporting ELF as a potential feature for cmpcodesize.

cmpcodesize is a tool used by the Swift performance team to measure the size of built Swift products. It would be useful to see the size of built products on Linux (ELF) as well as on OS X (Mach-O, which cmpcodesize currently supports).

While the script currently uses otool (available on OS X), the readelf executable could be used to analyze files linked with ELF. readelf is available on Linux.

The script could detect the current platform and use the appropriate executable.

[belkadan]

Removed "Tooling" keyword; this refers to user-facing tooling like SourceKit.

[TheBlckbird]

Where are the files for cmpcodesize?
I am completely new here